[mythtv-users] Writing a dual layer DVD+R DL disk
decepticon at gmail.com
Mon Mar 5 14:12:39 UTC 2007
FWIW, I've always had the best results with Fuji brand media. I've had
problems playing back other media on certain players, including TDK,
and Sony media.
On 3/4/07, Brian Wood <beww at beww.org> wrote:
> On Mar 4, 2007, at 8:42 PM, Mark Smith wrote:
> > In message
> > <c841f4d10703040836l13d59243s27d200911ddfda15 at mail.gmail.com>
> > "jason maxwell" <decepticon at gmail.com> wrote:
> >> its possible that data flow cant keep up with the speed of the
> >> writer.
> >> you can pass cdrecord options thru growisofs.
> > I can see I can pass mkisofs options through growisofs, though not
> > cdrecord
> > options so far as I can see. Attempting to specify a -dummy option
> > results in
> > it complaining about not being able to use '=' with mkisofs options. I
> > suspect it believes that any options it doesn't recognise are to be
> > passed to
> > mkisofs but that is incompatible with my specifying a prebuilt image.
> > I've tried the -dry-run option on growisofs but that seems to do
> > very little
> > - it certainly doesn't go through the entire writing process with
> > the laser
> > switched off.
> > Also, my specifying -speed=1 seemed to make no difference - it went
> > back to
> > writing at 2.5x speed, which may be the issue as the media is only
> > rated at
> > 2.4x speed. The really odd thing is that dvd+rw-mediainfo indicates
> > the drive
> > is capable of 6.1x, 5.1x, 4.1x, 3.1x, 2.0x and 1.0x write speeds, yet
> > growisofs claimed it was writing at 2.5x speed.
> The media is supposed to tell the drive what speed it is capable of
> being written to at. 2.4X is a common speed for DL disks, but perhaps
> the drive isn't capable of such fine distinctions as that between 2.4
> and 2.5? I wouldn't think it would make much difference but then why
> do they spec 2.4?
> I don't know why -speed=1 doesn't work, it should AFAIK, man
> growisofs if you haven't already for more info.
> You might want to be sure your drive(s) have the latest firmware
> available, the vendor's site should help you out there.
> > If I could get it to slow down I might have more success. I'm
> > beginning to
> > believe that I might be better off using something other than
> > growisofs, but
> > the version of cdrecord that I have can't do DVD+.
> I'm still betting it's a media problem, you might try buying a single
> or a 3-pack of high-priced media to check, but that's a costly test,
> and cost does not always equal quality.
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